Andrew b



(No Model.)

- E. STOCKWBLL.

AUTOMATIC BOLT DOGGING DEVICE.

,697. Patented Dec. 1'7, 1895.

NoJ 551 nlnnlm..

ANDREW EGRAWAM. PNUOMIIQWASHMGTOILDU, i

UNITED STATES 1 AT-ENT Enron.

EMORY STOCKWELL, OF STAMFORD, CONNECTICUT, ASSIGNOR TO THE YALE & TOVNEMANUFACTURING COMPANY, OE SAME PLACE.

AUTOMATIC BOLT-DOGGING DEVICE.

SPECIFICATION forming part of Letters Patent No. 551,697, dated December1'?, 1895.

Application iiled December 26, 1894. Serial No. 532,998. (No model.)

To @ZZ whom it may con/cern.-

Be it known that I, EMORY SrocKwnLL, a citizen'of the United States,residing at Stamford, in the county of Fairiield and State ofConnecticut, have invented certain new and useful Improvements inAutomatic Bolt-D ogging Devices, of which the following is aspecication.

The invention has for its object to provide means for directly doggingthe boltwork in a safe, which means is under the control of theautomatic bolt-operating mechanism.

Afurther obj ect is to provide for setting the dog by the act of settingup the automatic mechanism, while the bolts are withdrawn, and to soconstruct said dog that it will thereafter enter into the lockedposition automatically when the bolts are cast.

Automatic bolt -operating devices have been objected to on the groundthat when the bolts are cast they are not deadlocked, and this has beenalleged as a source of insecurity. It has been sought to overcome thisalleged insecurity by the use of a dog under control of the time-lock,which, so long as the time-lock is in locked position, will deadlock theboltwork. This device is effective, but it may cause considerabletrouble, owing to the fact that sometimes the hook which holds up thecombination-lever system of the automatic bolt-operatin g mechanism maybe engaged so insecurely, lowing perhaps to the movements not beingwound or to something which causes the hook to stick, that the jarcaused by the boltwork being thrown forp ward will throw off the hook`and thus per- Vting open the safe.

mit the unlocking-springs to come into operation, in which case, thetime-lock being in locked position, the boltwork is thrown against thetime-lock dog with all the force of the unlocking-springs and there isno possible way to get the bolts forward or back, so that an absolutelockout occurs, necessitating cut- For the above reason it is obviousthat such proposed device is dangerous when a time-lock is used inconnection with an automatic and the boltwork is dogged by means of thetime-lock.

My present invention provides a dog which Vof setting up the automatic.

will directly and absolutely lock the boltworlr, but it is not liable tocause any trouble vfrom lockout.

It consists principally in an independent movable bolt or dog Vwhich isconnected to some part of the lever system of an automatic locking andunlocking device and arranged to be shifted into effective position bythe act I have shown the dog movable upon a pivot and connected to thehook upon the main shaft by which the system is set up, so that whenthis shaft is turned by means of the wrench the dog is rocked intolocking position. l

The invention further consists in so constructing the locking-dog thatit may be thus drawn into locking position while the bolts are withdrawnand therefore while the front end remains out of active position, butwill immediately enter behind the boltwork as soon as the latter iscast. I accomplish this by making one end of the dog yielding, so thatwhen the opposite end is pulled up the yielding end may rest upon thatposition of the boltwork which ,it is to engage, and may be forced intoposition behind said boltwork when the latter is cast.

The invention also consists in certain other details of constructionwhereby the parts are betteradapted to perform the functions abovereferred to.

My invention will be fully understood upon reference to the accompanyingdrawings, in which- Figure l represents a portion of the boltworktogether with the well-known form of automatic bolt-operating device andmy present improvements associated with said parts. Fig. 2 is an edgeview of the automatic and a sectional View of the dog through the jointwhich renders it yielding. Fig. 3 is a horizontal section through thedogging-lever and the parts in a plane therewith.

1 may represent any suitable form of boltwork and 2 the draw-bar of theautomatic unlocking device which is set up into operative position bymeans of the main shaft 3 carrying the hook-lever A and controlled bycompound levers 5 which are in turn sustained by the detent 6 controlledby a time-lock. For convenience the 'dogging of the boltwork is effectedthrough the medium of a projection 7. rlhis is engaged by the dog Spivoted at 9 and connected by link l0 with some portion of theautomatic-such7 for instance, as hooked lever i of the main shaft 3. Inthe case of a double automatic there may be two links connecting the twohook-levers of the automatic to the dog. In this case the rear portionof the dog, if the yielding device is placed in the center, as in theconstruction shown in Fig. l, will need to be made double. From theconstruction it is obvious that when the shaft 3 is turned by the usualwrench until the hooked lever 4f is moved up into engagement withcompound levers 5 the dog 8 will be rocked into the posit-ion shown infront of the projection 7, when it will be impossible to force back thebolts from the outside.

1l represents an abutment for the dog 8 in the event of its beingunseated from its pivot 9. It is desirable, however, and, with the formof automatic shown, necessary to set the dog before the bolts have beencast. For this reason dog 8 is provided with a joint l2 which permits itto bend upward slightly, and with a spring 13 attached to one part andbearing on the other, to hold said parts normally in alignment. By thisconstruction it will be seen that when the bolts are withdrawn and theprojection 7 therefor in the position shown by dotted lines, the dog 8may still be set by movement of the shaft 3 and hooked lever l, inasmuchas the spring yields when the front end Sn is obstructed by theprojection 7. Illen however the bolts are cast and projection 7 movesout from beneath the end S the latter is returned to locked position bythe spring 13 and the clogging is effected as desired.

It is obvious that the yielding device may be placed in any desirablerelation to the dogas, foi-instance, under the rear end of it--so as totend to throw the lower end up. In this case the lower end of the linkwould not be rigidly connected to the dog, but merely pressing upon itsupper surface.

XVhile I have shown the particular construction and arrangement of partsabove described, I desire it understood that many changes may be madewithout departing from the spirit of my invention, which consistsbroadly in providing a movable dog for the boltwork, which dog is movedout of the way by the automatic unlocking device, and is permitted orcaused to enter into effective position automatically upon casting thebolt.

Having thus described my invention, the following is what I claim as newtherein and desire to secure by Letters Patent:

l. In combination with the bolt-work of a safe and an automaticunlocking device, the dog movable into and out of the path of thebolt-work and controlled by said unlocking device, substantially in themanner explained.

2. In combination with the bolt-work of a safe and an automatic devicefor retracting the same, the dog movable into and out of the path of thebolt-work and adapted to be held out of effective position thereby,connection between said dog and the bolt-retracting device, forwithdrawing the former from in front of the bolt-work, and means forforcing the dog into effective position when the bolt-work moves frombeneath it, substantially as set forth.

3. In combination with the bolt-work of a safe and an automatic boltretracting device; the dog` movable into and out of position in front ofthe bolt-work, and a positive connection between said dog and theautomatic retracting device, whereby it is moved in both directions asexplained.

L In combination with the I )Olt-work of a safe and the automatic boltretracting power, the setting shaft and a retaining lever carried bysaid shaft; the pivoted dog for dogging the bolt-work and a linkconnecting said dog with said retaining hooked lever of the boltretracting device, substantially in the manner and for the purpose setforth.

5. In combination with an automatic bolt operating device ofsubstantially the charactor specified, an independent dog, arranged todog the bolt-Work, connection between said dog and the lever system ofthe automatic bolt-operating device and a yielding device which permitsthe dog to remain in the un locked position while the automatic bolt opera-ting device is set in the position for locking.

6. In combination with the bolt work of a safe, a doggingleverundercontrol of the lock ing mechanism thereof and arranged to move intothe path of the bolt work, and. having a spring joint therein whichpermits it to break or bend, substantially as and for the purposes setforth.

EMORY "lOCKWELL Witnesses:

SCHUYLER Mnnnrrr, GEO. E. WHITE.

IOO

